#pragma once
#include <iostream>
#include <string>
#include "../comm/util.hpp"
#include "../comm/log.hpp"
#include <unordered_map>
#include <vector>
#include <cstdlib>
#include <assert.h>

namespace ns_model
{
    using namespace std;
    using namespace ns_log;
    using namespace ns_util;
    struct Question
    {
        /* data */
        std::string number;
        std::string title;
        std::string star;
        int cpu_limit;
        int mem_limit;
        std::string desc;
        std::string header;
        std::string tail;
    };

    const std::string questions_list = "./questions/questions.list";
    const std::string questions_path = "./questions/";

    class Model
    {
    private:
        unordered_map<string, Question> questions;

    public:
        Model()
        {
            assert(LoadQuestionList(questions_list));
        }
        bool LoadQuestionList(const string &question_list)
        {
            fstream in(questions_list);
            if(!in.is_open())
            {
                LOG(FATAL)<<"加载题库失败，请检查！\n";
                return false;
            }
            string line;
            while(getline(in,line))
            {
                vector<string> tokens;
                StringUtil::SplitString(line,&tokens," ");
                if(tokens.size()!=5)
                {
                    LOG(WARNING)<<"加载部分题目失败，请检查格式\n";
                    continue;
                }
                Question q;
                q.number=tokens[0];
                q.title=tokens[1];
                q.star=tokens[2];
                q.cpu_limit=atoi(tokens[3].c_str());
                q.mem_limit=atoi(tokens[4].c_str());

                string path=questions_path;
                path+=q.number;
                path+="/";
                FileUtil::ReadFile(path+"desc.txt",&(q.desc),true);
                FileUtil::ReadFile(path+"header.cpp",&(q.header),true);
                FileUtil::ReadFile(path+"tail.cpp",&(q.tail),true);

                questions.insert({q.number,q});
            }
            LOG(INFO)<<"用户读取题库成功\n";
            in.close();
            return true;
        }
        bool GetAllQuestions(vector<Question> *out)
        {
            if(questions.size()==0)
            {
                LOG(ERROR)<<"获取题库失败\n";
                return false;
            }
            for(const auto &q:questions)
            {
                out->push_back(q.second);
            }
            return true;
        }
        bool GetOneQuestion(const std::string &number,Question *q)
        {
            const auto &iter=questions.find(number);
            if(iter==questions.end())
            {
                LOG(ERROR)<<"用户获取题目失败，题目编号"<<number<<"\n";
                return false;
            }
            (*q)=iter->second;
            return true;
        }
        ~Model()
        {

        }
    };

}